Conservatives have a 4-3 majority. A Neubauer win wouldn't change that, but it would make it possible for liberals to take control of the court in another election next year for the first time since 2008.

She has outraised Hagedorn and benefited from about seven times more spending by partisan outside groups. That includes a group run by former Democratic U.S. Attorney General Eric Holder, who came to Wisconsin to rally support for Neubauer.